Can I usually wear glasses to measure my eyesight?

Work is different from study. Some majors have requirements for vision and will measure naked eye vision. Glasses are allowed to be worn at work, so the measurement is corrected vision. The purpose of measuring corrected vision is to prevent you from seeing things clearly and affecting your work. If the corrected vision is unqualified, the company will only let you get new glasses, and will not give you a card for this reason.